AR9 Receivers and Sets are components used in the construction of AR9 rifles. AR9 Receivers are specifically designed to accommodate 9mm ammunition, allowing for a more efficient and reliable shooting experience. These receivers are typically made from durable materials such as aluminum, ensuring longevity and durability. AR9 Sets include both the upper and lower receivers, providing a complete set of components necessary for the assembly of an AR9 rifle. These sets are often sought after by gun enthusiasts and hobbyists who enjoy customizing and building their firearms. With AR9 Receivers and Sets, shooters can enjoy the accuracy and versatility of the AR platform combined with the performance of 9mm ammunition.